The product of a number multiplied by a true fraction must be () the number A. is greater than B. is less than C. equals D Which one

b. Less than

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1. The product of a number multiplied by a true fraction must be less than this number______ (judge right or wrong)
2. It is known that, as shown in the figure, in △ ABC, ad and AE are the bisectors of height and angle of △ ABC respectively, if ∠ B = 30 ° and ∠ C = 50 ° (1) find the degree of ∠ DAE; (2) try to write out the relationship between ∠ DAE and ∠ C - ∠ B? (no proof required)
3. In △ ABC, a = 45 °, C = 30 ° and C = 10cm, find a, B and B
4. As shown in the figure, in △ ABC, the vertical bisector of AB intersects at D, de = 6, BD = 62, AE ⊥ BC at e, and the length of EC is obtained
5. In triangle ABC, angle a = 3, angle B, angle a-angle C = 30 degrees, then angle a =? Angle B =? Angle c =?
6. Trinomial inequality a + B + C ≥ how many a & # 178; + B & # 178; + C & # 178; greater than or equal to how many a ^ 3 + B ^ 3 + C ^ 3 ≥ how many
7. Given 1 > a > b > C > 0, we prove that (1-A) · (1-B) · (1-C) is greater than or equal to 8abc It is known that the three sides of a triangle with perimeter 1 are A.B., C
8. For any real numbers a (a ≠ 0) and B, the inequality | a + B | + | A-B | ≥ m · | a | holds. Note that the maximum value of real number m is m. (1) find the value of M; (2) solve the inequality | X-1 | + | X-2 | ≤ M
9. A problem of basic inequality in Senior High School If the positive numbers x and y satisfy 2x + 3Y = 11 / x + 1 / y, the minimum value is
10. A proof of inequality in Senior High School Let x, y, Z satisfy x + y + Z = 1 Verification: x ^ 2 / (y + 2Z) + y ^ 2 / (Z + 2x) + Z ^ 2 / (x + 2Y) > = 1 / 3
11. A number multiplied by a true fraction, product () itself A. Greater than B. less than C. equal to D. less than or equal to
12. The product of a natural number not equal to 0 multiplied by a true fraction must be less than this number The product of two numbers is 1. These two numbers are reciprocal to each other The original price of a coat is 280 yuan, which is reduced by 1 / 5. Now the price is 4 / 5 of the original price A fish weighs four fifths of its weight plus four fifths of its kilogram. This fish weighs one and three fifths of its kilogram The ratio of a, B and C is 1:2:3:5, and B is equal to the average of the three numbers The diameter of a circle increases by 2 cm, and the circumference of a circle also increases by 2 cm A is 5 / 4 meters more than B, B is 5 / 4 meters less than a
13. When a natural number that is not "0" is multiplied by a pure decimal, the product ratio multiplicand (), when it is multiplied by a decimal, the product ratio multiplicand ()
14. A true fraction becomes another true fraction. The product (greater than. Less than. Less than or equal to. None of the above) is multiplied
15. If a natural number is multiplied by a true fraction, the product must be greater than the multiplicand
16. The product of a number not equal to 0 multiplied by a true fraction must be less than this number 1. The product of a number not equal to 0 multiplied by a true fraction must be less than this number 2. Two numbers with the result of 1 are reciprocal to each other 3. The weight of a bottle of liquid medicine is 3 kg / 10, which can be written as 30% kg 4. The weight of a fish is four fifths of its weight plus four fifths of its weight. This fish weighs one and three fifths of its weight 5. The ratio of a, B and C is 1:2:3. B is equal to the average of the three numbers 6. If 80% of two bags of rice are eaten, the remaining weight of two bags of rice is equal
17. A number that is not equal to 0 multiplied by a true fraction, the product must be the number
18. If 1 / 3 of negative a is equal to 4 / 3, try to compare the size of a, 1 / 3 of a, negative a, 1 / 3 of A
19. A is a number that is not equal to 0. Please tell us which is bigger, a + 3 / 5 or a × 3 / 5
20. A is a number greater than 0. Which is bigger, a times 6 / 7 or a plus 6 / 7